#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
vector<int>ans;
const int N = 55, M = 5e5 + 10;
int a[N];
int f[M];
int n, x;
int main()
{
	int t;
	cin >> t;
	while (t--) {
		cin >> n;
		int sum = 0;
		for (int i = 1; i <= n; i++) {
			int x;
			cin >> x;
			sum += x;
		}
		if (n == 1) {
			cout << "NO" << endl;
			continue;
		}
		if (sum & 1)cout << "NO" << endl;
		else cout << "YES" << endl;
	}
	return 0;
}